Music-stand



2 Sheets-Sheet 1.

(No Model.)

. 8 0. A. BRONSON.

MUSIC STAND.

No. 578,809. Patented M81 16,18978,

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r 0. A. BRONSON.

- MUSIC STAND. No. 578,809. Y Patented Mar. 16, 1897.

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UNITED STATES PATENT OFFICE.

OTTO A. BRONSON, OF MINNEAPOLIS, MINNESOTA.

MUSIC-STAN D.

SPECIFICATION forming part of Letters Patent No. 578,809, dated March 16, 1897.

I Application filed Tune 25, 1896. Serial No. 596,918. (No model.)

To all whom it may concern:

Be it known that I, OTTO A. BRONSON, a citizen of the United States, residing at Minneapolis, in the county of Hennepin and State of Minnesota, have invented certain new and useful Improvements in Music-Stands; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention has for its object to provide an improved music-stand.

To this end my invention comprises the novel devices and combinations of devices hereinafter described, and defined in the claims.

The preferred form of my invention is illustrated in the accompanying drawings, wherein like letters refer to like parts throughout the several views.

Figure 1 is a right-hand side elevation showing a music-stand constructed in accordance with my invention. Fig. 2 is a horizontal section taken through the stand on the line 00 00 of Fig. 1, some partsbeing broken away. Fig. 3 is a horizontal section taken through the stand on the line 00 x of Fig. 1. Fig. 4 is a horizontal section taken through the stand on the irregular line 06 m of Fig. 1; and Fig. 5 is a detail view, in left side elevation, showing a pivot-plate to which the music-holder proper is rigidly attached.

It may be here premised that my present invention is directed to and has for its object to provide improved devices by means of which the adjustable parts of the music-stand may be locked together. These devices are adapted for application to any or all of the ordinary standard types of music holders or stands with but slight modifications thereof.

To lock the adjustable parts of the stand together, it has been customary to use setscrews; but these set-screws have not been satisfactory, inasmuch as they are always liable to become loosened and allow the stand to fall, and, further, inasmuch as the screws are liable to rattle out of their seats and become lost. In myinvention I overcome these objections by the provision of a device which cannot accidentally be separated from the rack and which, in its action, serves to positively lock the parts of the stand together, so

notches m.

that they cannot slip with respect to each other.

Referring to this preferred form of my device, a indicates the barrel or cylindrical portion of the stand; I), the vertically-movable rod or stem which works telescopically withinsaid barrel a; c, the rack or music-holder proper, and d the folding legs or base-supports of the rack. To the lower end of the barrel a is secured a cap f, provided with suitable pivot-lugs f. sleeve which is mounted to slide loosely on the barrel a and is provided with suitable pivot-1n gs g, to which the upper ends of the legsd are pivoted. h indicates connectinglinks, the upper ends of which are pivoted between the lugs f of the cap f, and the lower ends of which are pivoted to an intermediate portion of the cooperating legs 01.

The rack or 1nusic-holder c is carried with and secured to the upper end of the rod or stem b by means of a pair of pivot-plates 7t and in, united by a pivot le the member It being rigidly secured to the stem I) and the member being rigidly secured to the holder 0.

The parts so far described are substantially the ordinary standard construction now in common use in folding music-stands, and the manner in which these parts are adjusted and manipulated is well understood.

I will now describe my novel locking devices for securing the adjustable parts in theirproperly-setpositions. Directingattention first to the device for securing or locking the sliding head or collar 9 on the barrel a, (see Figs. 1 and 2,) it will be seen that the barrel a is provided at diiferent points or at intervals on one longitudinal face with The sliding head g is provided with an enlargement or keeper-lug m, which is provided with a suitable transverse seat, in which is loosely mounted a sliding lockpiece or plunger m which is provided with a lock-blade of, which is adapted for engagement with any one of the notches m in the barrel a. The stem portion of this lookplunger m projects outward from one side of the keeper-lug m and is provided with a nut or head m On the stem or plunger m compressed between the keeper m and the nut or head m is a coiled spring m As must be obvious, by reference particu- 9 indicates a sliding head or larly to Fig. 2, by pressing with the finger on the head m ofthe plunger m the said parts may be forced toward the left against the ac tion of the spring m thus carrying the lockblade portion m out of the engaged notch m of the barrel a, and thus rendering the sliding head g free for sliding movement on said barrel. When the finger is removed from the head m, the spring m will tend to throw the lock-plunger and blade m m toward the right, so that the sliding head 9 will be automatically locked to the barrel a whenever the lock-blade portion m i's brought into line with one of the notches m. By this means it will be seen that the sliding head 9 may be positively locked at any desired point on the barrel a which will give the desired adj ustment of the legs d.

Referring next to the lock for securing the vertically-adjustable stem 1) in its properlyadjusted position with respect to the barrel a, attention is called particularly to Figs. 1 and 3, by reference to which it will be seen that the stem Z), as well as its seat in the barrel a, are square in cross-section. This, while not absolutely necessary, is very desirable, as it prevents the said rod or stem 01 from turning on its axis and permits the series of notches n to be formed or cut in one angular edge thereof.

The upper end of the barrel a is enlarged, as shown at n, This enlarged portion or flange n is notched, as shown at W, and is provided with a suitable transverse plungerseat, in which is loosely mounted a lockplunger 01 which is provided with a lockblade portion 11 adapted for engagement with any one of the notches n in the rod or stem 1). The stem portion of the lock-plunger 97, projects outward from the notch n in the collar n and is provided with a head or nut 75. On the plunger n compressed between the head a and the shoulder formed in the collar 91', is a coiled spring n As is evident, in like manner to that described in connection with the lock device before described the lock-blade portion or may be engaged withand disengaged fromany one of the notches n of the rod or stem Z2, so as to give the proper vertical adj ustment of said rod 19 and music rack or holder 0.

From the foregoing description and an ins'pection of Figs. 2 and 3 of the drawings it will be seen that in one case the stem of the lock-plunger m is mounted to move and extends substantially tangential to the periphcry of the barrel a, while in the other case the stem of the lock-plunger n extends and is mounted to move substantially tangential to a Zgzircle struck around the corners of the rod In the music-rack shown and described the rack or music-holder c is mounted for angular adjustment, so as to throw the said holder at the right pitch to the person reading the music held by the same. The third form of my lock is used in connection with the pivot plates and k and serves to positively lock the holder 0 wherever set. In applying this look the pivot-plate 70, to which the music rack or holder 0 is secured, is provided on its rear face with notches p and p. The pivotplate 7r ,which is rigidly secured to the upper end of the vertically-movable stand I), is provided with a suitable transverse seat, in which is loosely mounted a lock-plungerp provided with a lock blade or lug p adapted for engagement with any one of the notches p or p of the pivot-plate 7t. The stem of the plunger 19 projects forward from its seat and is provided at its end with a head or nut 19 between which and the face of the pivot-plate k is compressed a coiled sprin'gp? As shown, there are three notches p, and these notches are so related to the lock-bladep of the lockplunger 13 that when engaged thereby they will hold the rack or holder 0 in either one of three inclined positions, adapting the holder to hold the music sheets or book. There is but one notch 11, and this is so related to the said lock 13 19 that when engaged by the blade portion p the rack or holder 0 will be locked in its folded position.

From the foregoing it is thought-to be evident that a music rack constructed and equipped with my invention will be much more convenient and efficient than the forms hitherto used. It will be understood, of course, that while I have described the rack as equipped with my improved lock devices in such manner that all of the adjustable parts may be locked thereby more or less of these devices might be employed, and also that various alterations in the details of construction of the locking devices-above described may be made without departing from-the spirit of my invention.

What I claim, and desire to secure by Letters Patent of the United States, is as follows:

1. A music-stand having cooperating telescopically-movable parts, the smaller member of which is notched, and afinger-operated lock-plu n ger mounted in the exterior telescopic section, with its stem extending sub stantially tangential to the periphery of the interior section and having a blade portion which is en gagea'ble with thenotches thereof, substantially as described.

2. In a music-stand, the combination with the barrel-section provided with notches, of the sliding head or collar movable on said barrel-section, leg-sections operated by the movement of said collar, and a finger-operated lock-plunger mounted in said head or. collar, with its stem portion extending substantially tangential to the periphery of said barrel, and provided with a blade portion which is engageable with the notches thereof, substantially as described.

3. In a music-stand, the combination with the barrel-section co provided with thenotches m, of the leg-sections 61 attached to the lower end of the barrel by means of the arms h, the sliding head or collar 9 having pivotal connections to the upper ends of said leg-sections cl, and the lock-plunger m with blade m engageable with said notches m, and having its stem extending substantially tangential to the periphery of the barrel a and subject to the action of the spring m substantially as described.

4. The combination with the barrel a provided with a passage which is square in crosssection, of the square rod 1) provided with notches on one edge, and the finger-operated plunger 12 with blade portion 41; engageable With the notches of said rod and having its stem portion extending tangential to a circle struck from the center of said barrel and subject to the action of the spring 12 substantially as described.

5. In a music-stand, the combination with the pair of pivotally-connected parts is and k, the member k having the notches p and p and the member 70 having the transverse plunger-seat, and the lock-plunger 19 provided with blade 19 adapted for engagement with said notches p and 19, under the action of the spring 19 substantially as described.

In testimony whereof I affix my signature in presence of two Witnesses.

OTTO A. BRONSON.

Witnesses:

GEORGE E. LA CLAIR, F. D. MERCHANT. 

